Improvement in sectional steam-boilers



UNITED STATES PATENT OEEICE.

STEPHEN J. GOLD, OF CORNWALL, CONNECTICUT.

I MPROVEMENT IN SECTIONAL STEAM-BOILERS.

Specification forming part of .Letters Patent No. 51,448, dated December 12, 1865.

To all whom 'it may concern:

Beit known that I, STEPHEN J. GOLD, of Cornwall, in the county of Litchfield and State of Connecticut, have invented a new and useful Improvement in Steam-Boilers; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, forming part of this specification, and to the letters of reference marked thereon, in which- Figure l is a perspective view ofthe boiler. Fig. 2 is a front elevation of a portion of the back section, showing the connection of line with the fire-chamber. Fig. 3 is a section on line m perpendicular to face of boiler-section. Fig.4E is a sectional view of the concave flange.

Similar letters of reference in the several figures denote the same part.

This invention has reference to an improvement in the construction ot' sectional steamboilers, and is designed to furnish a simple, effectual, and economical method of forming continuous iiues through this character of boiler across the sections, and by the connection of the sections forming hot-aitI chambers between them.

The'nature of the invention consists in constructing the separate and distinct sections each with the requisite number of ues running through it, and in forming along the edge or other suitable portion of the section and around each of the liues concave anges, which, when placed in juxtaposition, will form cavities for the insertion of plaster-of-paris, putty, or other suitable substance, which, being retained and hardening therein, eitectually closes thejoint and acts, as will be hereinatter described, to accomplish the desired purpose.

v In the drawings, A A represent the sections which make up the boiler. Each is cast separate, and is complete in itself so far as water, steam, and tire spaces are concerned. The waterspaces ofthe sections are united by the tubes a a, screwed into' consecutive sections, and the steam-spaces are connected by the pipe B, attached to the respective branch pipes b ofthe several sections, the connection of these several parts being effected by means of the rust-joint. Other methods of connecting the sections may, however, be employed, as the feature here considered is not dependent on any particular Inode of connecting the sections.

Through each of the sections are the direct and return tlues f f, the products ot combustion passing to the latter by means of the opening c in the back section. This opening is formed b v reducing the section to half its thickness between the lines d d, Fig. 2, which thus leaves channels from the tire-chamber D to the uesj" f. The current then passes to the front by these flues, and then, turning into the tluesj'f, passes to the back ofthe boiler and off by the smoke-flue.

Along` the edges of the sections and around the tlues are cast anges on, projecting from one-half to three-quarters ot' all inch, more or less, and formed with a concavity, e, Fig. 4, in their outer edge, the corners of the edge being likewise rounded oit'.

When the sections are united to form a boiler the anges of two consecutive sections come against each other, and leave a space, t', for the reception of plaster-of-paris, putty, or any other suitable substance, which, on hardening, forms a portion of the side of the air chamber or flue. The form of this cavity is such that the substance inserted is eft'ectually supported, so that it cannot fall out under any circumstance, and as thc flange is against a water-surface there is no liability of this substance to burn out.

There is th us formed continuous iues through the series of sections, which are as free from leakage as though they were formed of a single piece. Between the sections there are formed chambers from one inch to an inch and a half wide, the flanges and the substance held by them constituting their edges.

Having described my invention and the operation thereof, 1 disclaim of itself the sectional construction of steam-boilers but What I do claim as new and of my own invention, and desire to secure by Letters Pat ent, is-

1. The construction of boiler-sections with STEPHEN J. GOLD.

Witnesses B. C. ELLIOTT, GEO. PATTEN. 

